| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.tinkerpop.gremlin.process.traversal.step.filter; |
| |
| import org.apache.tinkerpop.gremlin.process.traversal.Traversal; |
| import org.apache.tinkerpop.gremlin.process.traversal.Traverser; |
| import org.apache.tinkerpop.gremlin.process.traversal.util.FastNoSuchElementException; |
| import org.apache.tinkerpop.gremlin.structure.util.StringFactory; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| /** |
| * @author Randall Barnhart (random pi) |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| public final class TimeLimitStep<S> extends FilterStep<S> { |
| |
| private AtomicLong startTime = new AtomicLong(-1); |
| private final long timeLimit; |
| private AtomicBoolean timedOut = new AtomicBoolean(false); |
| |
| |
| public TimeLimitStep(final Traversal.Admin traversal, final long timeLimit) { |
| super(traversal); |
| this.timeLimit = timeLimit; |
| } |
| |
| @Override |
| protected boolean filter(final Traverser.Admin<S> traverser) { |
| if (this.startTime.get() == -1l) |
| this.startTime.set(System.currentTimeMillis()); |
| if ((System.currentTimeMillis() - this.startTime.get()) >= this.timeLimit) { |
| this.timedOut.set(true); |
| throw FastNoSuchElementException.instance(); |
| } |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return StringFactory.stepString(this, this.timeLimit); |
| } |
| |
| @Override |
| public void reset() { |
| super.reset(); |
| this.startTime.set(-1l); |
| this.timedOut.set(false); |
| } |
| |
| public boolean getTimedOut() { |
| return this.timedOut.get(); |
| } |
| |
| @Override |
| public TimeLimitStep<S> clone() { |
| final TimeLimitStep<S> clone = (TimeLimitStep<S>) super.clone(); |
| clone.timedOut = new AtomicBoolean(this.timedOut.get()); |
| clone.startTime = new AtomicLong(this.startTime.get()); |
| return clone; |
| } |
| |
| @Override |
| public int hashCode() { |
| return super.hashCode() ^ Long.hashCode(this.timeLimit); |
| } |
| } |